2718879505 has 4 divisors (see below), whose sum is σ = 3262655412. Its totient is φ = 2175103600.

The previous prime is 2718879503. The next prime is 2718879529. The reversal of 2718879505 is 5059788172.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1794962689 + 923916816 = 42367^2 + 30396^2 .

It is not a de Polignac number, because 2718879505 - 2¹ = 2718879503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2718879503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271887946 + ... + 271887955.

It is an arithmetic number, because the mean of its divisors is an integer number (815663853).

Almost surely, 2^2718879505 is an apocalyptic number.

It is an amenable number.

2718879505 is a deficient number, since it is larger than the sum of its proper divisors (543775907).

2718879505 is an equidigital number, since it uses as much as digits as its factorization.

2718879505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543775906.

The product of its (nonzero) digits is 1411200, while the sum is 52.

The square root of 2718879505 is about 52142.8758796444. The cubic root of 2718879505 is about 1395.7147033796.

The spelling of 2718879505 in words is "two billion, seven hundred eighteen million, eight hundred seventy-nine thousand, five hundred five".